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84 lines
2.5 KiB
Plaintext
Executable File
84 lines
2.5 KiB
Plaintext
Executable File
Title: Semeion Handwritten Digit
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Abstract: 1593 handwritten digits from around 80 persons were scanned,
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stretched in a rectangular box 16x16 in a gray scale of 256 values.
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Data Set Characteristics: Multivariate
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Number of Instances: 1593
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Area: Computer
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Attribute Characteristics: Integer
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Number of Attributes: 256
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Date Donated: 2008-11-11
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Associated Tasks: Classification
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Missing Values? N/A
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Source:
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The dataset was created by Tactile Srl, Brescia, Italy
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(http://www.tattile.it/) and donated in 1994 to Semeion Research Center
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of Sciences of Communication, Rome, Italy (http://www.semeion.it/), for
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machine learning research.
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For any questions, e-mail Massimo Buscema (m.buscema '@' semeion.it) or
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Stefano Terzi (s.terzi '@' semeion.it)
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Data Set Information:
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1593 handwritten digits from around 80 persons were scanned, stretched
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in a rectangular box 16x16 in a gray scale of 256 values.Then each pixel
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of each image was scaled into a bolean (1/0) value using a fixed
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threshold.
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Each person wrote on a paper all the digits from 0 to 9, twice. The
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commitment was to write the digit the first time in the normal way
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(trying to write each digit accurately) and the second time in a fast
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way (with no accuracy).
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The best validation protocol for this dataset seems to be a 5x2CV, 50%
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Tune (Train +Test) and completly blind 50% Validation.
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Attribute Information:
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This dataset consists of 1593 records (rows) and 256 attributes
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(columns).
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Each record represents a handwritten digit, orginally scanned with a
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resolution of 256 grays scale (28).
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Each pixel of the each original scanned image was first stretched, and
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after scaled between 0 and 1 (setting to 0 every pixel whose value was
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under tha value 127 of the grey scale (127 included) and setting to 1
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each pixel whose orinal value in the grey scale was over 127).
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Finally, each binary image was scaled again into a 16x16 square box (the
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final 256 binary attributes).
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Relevant Papers:
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M Buscema, MetaNet: The Theory of Independent Judges, in Substance Use &
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Misuse 33(2)1998, pp 439-461.
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Citation Request:
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Semeion Research Center of Sciences of Communication, via Sersale 117,
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00128 Rome, Italy
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Tattile Via Gaetano Donizetti, 1-3-5,25030 Mairano (Brescia), Italy.
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